Heat dissipation system

Abstract

The utility model provides a heat dissipation system. The heat dissipation system comprises a box body which is provided with a containing cavity, a liquid inlet and a liquid outlet, and the containing cavity is used for containing a part to be cooled and a cooling medium; the at least two adjusting parts are both arranged in the containing cavity, the at least two adjusting parts are oppositely arranged to form a circulation channel in a surrounding mode, at least part of a part to be cooled is contained in the circulation channel, and the liquid inlet communicates with the liquid outlet through the circulation channel; at least one adjusting part is movably arranged, so that the size of the circulation channel is adjusted when the adjusting part moves towards or away from at least another adjusting part; and the circulating device is arranged outside the box body, and the two ends of the circulating device communicate with the liquid inlet and the liquid outlet correspondingly so as to be used for driving the cooling medium to circularly flow between the box body and the circulating device. The battery pack heat dissipation system effectively solves the problem that in the prior art, the heat dissipation reliability of the battery pack heat dissipation system is poor.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery technical field, specifically, relate to a heat dissipation system. BACKGROUND

[0002] At present, with the application of lithium ion battery pack composed of lithium ion battery more and more widely, the user's various performance requirements of lithium ion battery pack are more and more strict, and when the lithium ion battery pack appears the phenomenon of poor heat management, the electrical performance and service life of lithium ion battery pack will be reduced, which not only affects the use experience of consumers, and even seriously affects the personal safety of consumers.

[0003] In the prior art, in order to avoid the phenomenon of poor heat management of lithium ion battery pack, the lithium ion battery pack is usually used with active cooling system. Among them, the immersion liquid cooling mode in the common active cooling system can directly participate in the cooling of the tab and PCB board through the cooling liquid to absorb the heat emitted by the battery, and then improve the heat dissipation efficiency of the battery cell.

[0004] However, the thermal conductivity of the cooling liquid is low, when the battery cell is discharged at a large rate, the tab and PCB board are prone to local temperature rise too fast, and the overall heat conduction efficiency (heat dissipation efficiency) of the cooling liquid at this time cannot meet the heat dissipation demand of the battery cell, and then the lithium ion battery pack still appears the phenomenon of poor heat management. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a heat dissipation system to solve the problem of poor heat dissipation reliability of the battery pack heat dissipation system in the prior art.

[0006] In order to achieve the above purpose, according to the utility model, a heat dissipation system is provided, which comprises: a box body having a containing cavity, a liquid inlet and a liquid outlet, the containing cavity is used for containing the heat dissipation part and the cooling medium; at least two adjusting parts are arranged in the containing cavity, the at least two adjusting parts are arranged oppositely to form a flow channel, the flow channel contains at least part of the heat dissipation part, the liquid inlet is communicated with the liquid outlet through the flow channel; wherein, at least one adjusting part is movably arranged, so that when the adjusting part moves towards or away from at least another adjusting part, the size of the flow channel is adjusted; a circulating device is arranged outside the box body, two ends of the circulating device are communicated with the liquid inlet and the liquid outlet respectively, so as to drive the cooling medium to circulate between the box body and the circulating device.

[0007] Further, the heat dissipation system further comprises a heat dissipation device, the heat dissipation device is arranged on one side of the circulating device, and the heat dissipation device blows air flow to the circulating device to dissipate heat of the cooling medium in the circulating device.

[0008] Further, the circulating device comprises: a pump body structure; a communication structure arranged between the pump body structure and the tank body, two ends of the pump body structure being communicated with the liquid inlet and the liquid outlet through the communication structure respectively; or one end of the pump body structure being communicated with one of the liquid inlet and the liquid outlet, and the other end of the pump body structure being communicated with the other one of the liquid inlet and the liquid outlet through the communication structure; wherein the heat dissipation device is arranged on one side of the communication structure to blow air flow to the communication structure.

[0009] Further, the communication structure is tubular and comprises a plurality of main body sections and a heat dissipation section, the heat dissipation section being arranged between two adjacent main body sections, at least one main body section being communicated with the liquid inlet and / or the liquid outlet, the heat dissipation section comprising: a plurality of straight pipe sections and a bending section between two adjacent straight pipe sections, the two adjacent straight pipe sections being communicated with each other through the bending section; or a plurality of bending sections communicated with each other; wherein the heat dissipation device is arranged on one side of the heat dissipation section to blow air flow to the heat dissipation section.

[0010] Further, the liquid inlet and the liquid outlet are respectively arranged on two opposite sides of the tank body, and the height H2 of the liquid outlet relative to the bottom of the tank body satisfies: H2 < H1.

[0011] Further, the heat dissipation system further comprises: a plurality of limiting structures arranged in the accommodation cavity, the plurality of limiting structures being arranged around the to-be-cooled member to form a limiting space for fixing the to-be-cooled member.

[0012] Further, the adjusting member has a first matching part, the limiting structures on both sides of the flow passage are matching limiting structures, the matching limiting structures have second matching parts, one of the first matching part and the second matching parts is a protrusion, the other one of the first matching part and the second matching parts is a recess, the protrusion extends into the recess, and the first matching part is slidably arranged along the extension direction of the second matching part.

[0013] Further, the first matching part is a recess, the second matching part is a protrusion, the limiting structure is a plate-shaped structure arranged on the bottom wall and / or the side wall of the accommodation cavity, the plate surface of the plate-shaped structure is arranged opposite to at least part of the side wall to form the protrusion of the matching limiting structure by at least part of the plate-shaped structure away from the bottom wall; the adjusting member is plate-shaped and has a notch, the notch is a recess; wherein the adjusting member is inserted on the matching limiting structure through the notch and can slide along the extension direction of the matching limiting structure, and in the at least two adjusting members arranged opposite to each other, the plate surface of each adjusting member surrounds the flow passage.

[0014] Further, the box body comprises a main structure having a receiving recess, and a cover body arranged on the main structure and surrounding a receiving cavity with at least part of the inner wall of the receiving recess.

[0015] Further, the main structure further has a mounting opening and a through hole in communication with the receiving cavity, and the box body further comprises a wire outlet structure arranged at the mounting opening and having a wire outlet hole for the wire of the to-be-cooled component to extend out of the receiving cavity, and a transparent plate arranged at the through hole.

[0016] Further, the circulating device further comprises a storage structure having an inlet portion, an outlet portion and a storage cavity for storing the cooling medium, the inlet portion being in communication with the outlet portion through the storage cavity, and the storage structure being arranged between two adjacent main body segments, and one of the two main body segments being in communication with the other through the inlet portion, the storage cavity and the outlet portion.

[0017] The technical scheme of the present application can continuously and stably absorb the heat emitted by the to-be-cooled component by the cooling medium directly contacting the to-be-cooled component during the operation of the to-be-cooled component, so as to cool the to-be-cooled component. At the same time, the circulation of the cooling medium is driven by the circulating device, so that the convection of the cooling medium can be formed in the receiving cavity, that is, the cooling medium with low thermal conductivity and high temperature can quickly flow away, and the cooling medium with high thermal conductivity and low temperature can quickly supplement, so as to ensure high cooling efficiency of the cooling medium, thereby solving the problem of poor cooling reliability of the battery pack cooling system in the prior art. At the same time, the adjusting member can adjust the flow speed of the cooling medium in the flow passage by adjusting the size of the flow passage (when the flow passage becomes smaller, the flow speed of the cooling medium increases, the convection effect increases, and the cooling efficiency of the cooling medium increases; when the flow passage becomes larger, the flow speed of the cooling medium decreases, the convection effect decreases, and the cooling efficiency of the cooling medium decreases), that is, the staff can adjust the size of the flow passage to ensure that the cooling performance of the cooling system can meet the cooling demand of to-be-cooled components of different specifications and sizes, thereby improving the universality of the cooling system. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application, serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 An overall structure perspective view of an embodiment of the cooling system according to the present application is shown;

[0020] Figure 2 An exploded view of the structure of the box of the heat dissipation system in Figure 1

[0021] Figure 3 A top view of the box of the heat dissipation system in Figure 1

[0022] Figure 4 A front view of the box of the heat dissipation system in Figure 1

[0023] Figure 5 A sectional view of the box of the heat dissipation system in Figure 1

[0024] Figure 6 An overall structure perspective view of the adjusting member of the heat dissipation system in Figure 1

[0025] Wherein, the above-mentioned drawings include the following reference signs:

[0026] 1, a heat dissipation member;

[0027] 10, a box; 11, a containing cavity; 12, a liquid inlet; 13, a liquid outlet; 14, a main body structure; 141, a containing recess;

[0028] 142, a mounting port; 143, a through hole; 15, a cover body; 16, a sealing structure; 17, a wire outlet structure; 171, a wire outlet hole; 18, a transparent plate; 19, a fastener;

[0029] 20, an adjusting member; 21, a first matching part;

[0030] 30, a circulating device; 31, a pump body structure; 32, a communication structure; 321, a heat dissipation section; 3211, a straight pipe section; 3212, a bending section; 322, a main body section; 3221, a first main body section; 3222, a second main body section; 3223, a third main body section; 3224, a fourth main body section; 33, a storage structure; 331, a liquid inlet part; 332, a liquid outlet part;

[0031] 40, a heat dissipation device;

[0032] 50, a limiting structure; 51, a second matching part; 52, a matching limiting structure. DETAILED DESCRIPTION

[0033] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0034] ​​​​​It should be noted that all technical and scientific terms used in the present application have the same meaning as that generally understood by those skilled in the art to which the present application belongs, unless otherwise specified.

[0035] In the present application, unless otherwise specified, the orientation words such as "up, down" used herein are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions; similarly, for the convenience of understanding and description, "left, right" is generally directed to the left and right shown in the drawings; "inner, outer" refers to the inner and outer relative to the contour of each component, but the above orientation words are not used to limit the present application.

[0036] The main purpose of the present application is to provide a heat dissipation system to solve the problem of poor heat dissipation reliability of the battery pack heat dissipation system in the prior art.

[0037] As shown in Figures 1 to 6 The heat dissipation system includes a box body 10, at least two adjusting members 20 and a circulating device 30. The box body 10 has a containing cavity 11, a liquid inlet 12 and a liquid outlet 13, and the containing cavity 11 is used to contain the heat dissipation member 1 and the cooling medium. The at least two adjusting members 20 are arranged in the containing cavity 11, and the at least two adjusting members 20 are oppositely arranged to form a flow-through channel, and the flow-through channel contains at least part of the heat dissipation member 1. The liquid inlet 12 is communicated with the liquid outlet 13 through the flow-through channel. Among them, at least one adjusting member 20 is movably arranged, so that when the adjusting member 20 moves towards or away from at least another adjusting member 20, the size of the flow-through channel is adjusted. The circulating device 30 is arranged outside the box body 10, and the two ends of the circulating device 30 are respectively communicated with the liquid inlet 12 and the liquid outlet 13, so as to drive the cooling medium to circulate between the box body 10 and the circulating device 30.

[0038] The technical scheme is applied to the embodiment, and the cooling medium in direct contact with the to-be-cooled part 1 can continuously and stably absorb the heat emitted by the to-be-cooled part 1 during operation of the to-be-cooled part 1, so as to cool the to-be-cooled part 1. Meanwhile, the circulation device drives the cooling medium to flow in circulation, so that the convection of the cooling medium can be formed in the accommodating cavity 11, that is, the cooling medium with low thermal conductivity and high temperature can quickly flow away, and the cooling medium with low temperature and high thermal conductivity can quickly supplement, so as to ensure that the cooling medium has high heat dissipation efficiency, thereby solving the problem of poor heat dissipation reliability of the battery pack heat dissipation system in the prior art. Meanwhile, the adjusting part 20 can adjust the flow speed of the cooling medium in the flow passage by adjusting the size of the flow passage (when the flow passage becomes smaller, the flow speed of the cooling medium increases, the convection effect is enhanced, and the heat dissipation efficiency of the cooling medium increases; when the flow passage becomes larger, the flow speed of the cooling medium decreases, the convection effect is weakened, and the heat dissipation efficiency of the cooling medium decreases), that is, the staff can adjust the size of the flow passage to ensure that the heat dissipation performance of the heat dissipation system can meet the heat dissipation requirements of to-be-cooled parts 1 of different specifications and sizes, thereby improving the universality of the heat dissipation system.

[0039] In the embodiment, the to-be-cooled part 1 is a battery pack.

[0040] In the embodiment, the cooling medium is a fluorinated liquid.

[0041] Specifically, in the prior art, some heat dissipation systems also increase the volume of the cooling medium to ensure that the cooling medium can timely take away the heat generated by the battery pack. However, because the density of the cooling medium is large, the above-mentioned method seriously increases the weight of the battery pack, which does not meet the mainstream requirement of weight reduction design of the battery pack in the market. The heat dissipation system in the embodiment does not need to set a large-volume cooling medium to ensure that the battery pack can stably operate (without heat management out-of-control phenomenon), which greatly meets the use requirements of users.

[0042] Specifically, the fluorinated liquid has the characteristics of insulation, large specific heat capacity, excellent thermal conductivity, stable chemical properties, corrosion resistance, no ignition point / flashing point, non-toxicity, easy cleaning, and good flowability, thereby ensuring that the heat exchange stability between the cooling medium and the to-be-cooled part 1 is high enough.

[0043] In the embodiment, a plurality of reinforcing ribs are arranged on the outer circumferential surface of the box body 10, and the plurality of reinforcing ribs are arranged at intervals around the box body 10 to reinforce the box body 10.

[0044] As shown in FIG. 1, the heat dissipation system comprises a box body 10 and a to-be-cooled part 1. Figure 1As shown, the heat dissipation system further comprises a heat dissipation device 40, which is arranged at one side of the circulating device 30. The heat dissipation device 40 blows air flow to the circulating device 30 to dissipate heat of the cooling medium in the circulating device 30. In this way, the heat dissipation device 40 can further cool the cooling medium in the circulating device 30, so as to reduce the temperature of the cooling medium flowing back to the accommodating cavity 11, further improve the cooling effect of the cooling medium, and improve the heat exchange efficiency between the cooling medium and the heat dissipation object 1, and further ensure that the heat dissipation object 1 can stably operate.

[0045] In the embodiment, the heat dissipation device 40 is a fan.

[0046] As shown in the figure, Figure 1 The circulating device 30 comprises a pump body structure 31 and a communication structure 32. The communication structure 32 is arranged between the pump body structure 31 and the box body 10. The two ends of the pump body structure 31 are respectively communicated with the liquid inlet 12 and the liquid outlet 13 through the communication structure 32. Alternatively, one end of the pump body structure 31 is communicated with one of the liquid inlet 12 and the liquid outlet 13, and the other end of the pump body structure 31 is communicated with the other one of the liquid inlet 12 and the liquid outlet 13 through the communication structure 32. The heat dissipation device 40 is arranged at one side of the communication structure 32 to blow air flow to the communication structure 32. In this way, the above-mentioned arrangement can not only realize the liquid circulation driving function of the circulating device 30 through the pump body structure 31, but also make the structure of the circulating device 30 more simple, thereby reducing the processing cost and the processing difficulty of the staff of the circulating device 30. At the same time, the communication structure 32 is more conducive to heat dissipation of the cooling medium than the pump body structure 31. By arranging the heat dissipation device 40 at one side of the communication structure 32, the heat dissipation effect of the heat dissipation device 40 can be further improved.

[0047] In the embodiment, the communication structure 32 is arranged between the two ends (liquid inlet end and liquid outlet end) of the pump body structure 31 and the box body 10, so as to increase the arrangement range of the pump body structure 31, and further improve the structural diversity of the circulating device 30.

[0048] In other embodiments not shown in the figure, one end (liquid inlet end or liquid outlet end) of the pump body structure can be directly communicated with the liquid inlet or the liquid outlet of the box body, and only the communication structure is arranged between the other end of the pump body structure and the box body.

[0049] In the embodiment, the pump body structure 31 is a circulating pump.

[0050] As shown in the figure, Figure 1As shown, the communication structure 32 is tubular and includes heat dissipation sections 321 and a plurality of body sections 322, the heat dissipation sections 321 are arranged between adjacent two body sections 322, at least one body section 322 is in communication with the liquid inlet 12 and / or the liquid outlet 13, the heat dissipation section 321 includes a plurality of straight pipe sections 3211 and a bending section 3212 between adjacent two straight pipe sections 3211, the adjacent two straight pipe sections 3211 are in communication with each other through the bending section 3212. Alternatively, a plurality of bending sections 3212 are in communication with each other. Among them, the heat dissipation device 40 is arranged on one side of the heat dissipation section 321 to blow air flow to the heat dissipation section 321. In this way, the above arrangement increases the contact area between the air flow blown by the heat dissipation device 40 and the communication structure 32, further improves the heat dissipation effect of the heat dissipation device 40. At the same time, the above arrangement also makes the structure of the communication structure 32 more flexible and diverse to adapt to different working conditions and use requirements, and improves the processing flexibility of the workers.

[0051] In the embodiment, the heat dissipation section 321 includes three straight pipe sections 3211, and the bending section 3212 between adjacent two straight pipe sections 3211 is two, that is, a wave-shaped heat dissipation pipe network is formed between the three straight pipe sections 3211 and the two bending sections 3212, so as to increase the pipeline arrangement density of the heat dissipation section 321, and further increase the contact area between the air flow blown by the heat dissipation device 40 and the communication structure 32.

[0052] It should be noted that the number of straight pipe sections 3211 is not limited to this, and can be adjusted according to the working condition and use requirement. Alternatively, the number of straight pipe sections 3211 is four, or five, or six, or seven, or a plurality.

[0053] It should be noted that the number of bending sections 3212 is not limited to this, and can be adjusted according to the working condition and use requirement. Alternatively, the number of bending sections 3212 is three, or four, or five, or six, or a plurality.

[0054] In other real-time manners not shown in the drawings, the heat dissipation section can also only include a plurality of bending sections in communication with each other to form an S-shaped heat dissipation pipe network.

[0055] In the embodiment, the body section 322 is four, and a ring-shaped structure is formed between the four body sections 322, the heat dissipation section 321 and the box body 10 to form a circulating flow path, that is, in the two body sections 322 adjacent to the box body 10, the two body sections 322 are in communication with the liquid inlet 12 and the liquid outlet 13 respectively.

[0056] In other embodiments not shown in the drawings, one end (liquid inlet end or liquid outlet end) of the pump body structure can also be directly communicated at the liquid inlet of the box body, at this time, only one body section is in communication with the liquid outlet.

[0057] As Figures 1 to 4As shown in the drawings, the liquid inlet 12 and the liquid outlet 13 are respectively arranged on the two opposite sides of the box body 10, and the height H1 of the liquid inlet 12 relative to the bottom of the box body 10 and the height H2 of the liquid outlet 13 relative to the bottom of the box body 10 satisfy: H2 < H1. In this way, during the flow of the cooling medium from the liquid inlet 12 to the liquid outlet 13, the above arrangement between the height H1 and the height H2 causes a height difference between the liquid inlet 12 and the liquid outlet 13, so that the cooling medium can flow faster under the action of its own gravity, further enhancing the convection effect of the cooling medium, and thereby improving the heat exchange efficiency between the cooling medium and the heat-dissipating piece 1. At the same time, since the liquid inlet 12 and the liquid outlet 13 are respectively arranged on the two opposite sides of the box body 10, the flow direction of the cooling medium will not change much during its flow from the liquid inlet 12 to the liquid outlet 13, further increasing the flow speed of the cooling medium.

[0058] As shown in the drawings, Figure 3 and Figure 5 The heat dissipation system further comprises a limiting structure 50. The limiting structure 50 is arranged in the accommodating cavity 11, and the limiting structure 50 is a plurality of limiting structures 50 arranged around the heat-dissipating piece 1 to form a limiting space for fixing the heat-dissipating piece 1. In this way, the heat-dissipating piece 1 is fixed by the limiting structure 50, which can avoid the heat-dissipating piece 1 from shaking and displacing in the flow passage, so as to ensure a stable distance between the heat-dissipating piece 1 and the inner wall (adjusting piece 20) of the flow passage, and further improve the heat dissipation effect of the cooling medium on the heat-dissipating piece 1. In this embodiment, the number of limiting structures 50 is eight, and the eight limiting structures 50 are arranged at intervals around the central axis of the box body 10 perpendicular to the bottom surface of the box body 10.

[0059] It should be noted that the number of limiting structures 50 is not limited to this, and can be adjusted according to the working conditions and use requirements. Alternatively, the number of limiting structures 50 is four, or five, or six, or seven, or a plurality.

[0060] As shown in the drawings, Figure 5 and Figure 6As shown, the adjusting piece 20 has a first matching part 21, the limiting structure 50 located on both sides of the flow passage is a matching limiting structure 52, the matching limiting structure 52 has a second matching part 51, one of the first matching part 21 and the second matching part 51 is a protrusion, and the other of the first matching part 21 and the second matching part 51 is a recess, the protrusion extends into the recess, and the first matching part 21 is slidably arranged along the extension direction of the second matching part 51. In this way, the limiting structure 50 not only limits and fixes the to-be-cooled piece 1, but also realizes the sliding connection of the adjusting piece 20 through the first matching part 21 of the matching limiting structure 52 and the second matching part 51 of the adjusting piece 20, that is, the worker can move the adjusting piece 20 towards or away from the other adjusting piece 20 by sliding the adjusting piece 20, so as to adjust the size of the flow passage. At the same time, the above-mentioned arrangement makes the structure of the first matching part 21 and the second matching part 51 more flexible and diverse, so as to adapt to different working conditions and use requirements, and also improves the processing flexibility of the worker.

[0061] As shown in Figure 3 , Figure 5 and Figure 6 , the first matching part 21 is a recess, the second matching part 51 is a protrusion, the limiting structure 50 is a plate-shaped structure and is arranged on the bottom wall and / or the side wall of the accommodating cavity 11, the plate surface of the plate-shaped structure is arranged opposite to at least part of the side wall, so as to form the protrusion of the matching limiting structure 52 by the plate-shaped structure away from at least part of the bottom wall. The adjusting piece 20 is plate-shaped and has a notch, and the notch is a recess. Among them, the adjusting piece 20 is inserted on the matching limiting structure 52 through the notch and can slide along the extension direction of the matching limiting structure 52, and in the oppositely arranged at least two adjusting pieces 20, the plate surface of each adjusting piece 20 surrounds the flow passage. In this way, the above-mentioned arrangement makes the structure of the limiting structure 50 and the adjusting piece 20 and the formation of the protrusion and the recess easier to process and realize, thereby reducing the processing cost of the limiting structure 50 (the matching limiting structure 52) and the adjusting piece 20 and the processing difficulty of the worker; on the other hand, it also makes the assembly and adjustment process between the matching limiting structure 52 and the adjusting piece 20 simpler (that is, insertion and sliding), thereby reducing the operation difficulty of the worker and improving the assembly and adjustment efficiency of the worker.

[0062] Specifically, the limiting structure 50 (including the matching limiting structure 52) in the embodiment is actually a simple plate-shaped structure, which not only helps to reduce the processing cost of the limiting structure 50, but also enables the worker to not need to separately distinguish the matching limiting structure 52 during the assembly of the limiting structure 50, thereby further reducing the assembly difficulty of the worker.

[0063] In the embodiment, the adjusting piece 20 is a silica gel plate.

[0064] Specifically, the thickness T of the adjusting piece 20 is 1 mm.

[0065] In the embodiment, the two oppositely arranged adjusting members 20 are located between the liquid inlet 12 and the liquid outlet 13.

[0066] As shown in FIG. 1, Figure 5 In the embodiment, there are actually twelve adjusting members 20, in addition to the two oppositely arranged adjusting members 20, five adjusting members 20 are additionally arranged between the adjusting members 20 forming the flow passage and the cavity wall of the accommodating cavity 11, so that the adjusting members 20 can support the adjusting members 20 forming the flow passage, thereby avoiding the adjusting members 20 forming the flow passage from moving or displacing under the impact of the cooling medium, and improving the size stability of the flow passage.

[0067] Specifically, as shown in FIG. 1, Figure 5 That is, the mounting mode of the adjusting member 20 is adopted, and the cooperating limiting structure 52 for mounting the adjusting member 20 is blocked by the six adjusting members 20.

[0068] In other embodiments not shown in the drawings, the first cooperating part is a protrusion, and the second cooperating part is a recess.

[0069] As shown in FIG. 1, Figures 1 to 5 The box body 10 includes a main body structure 14 and a cover body 15. The main body structure 14 has an accommodating recess 141. The cover body 15 is arranged on the main body structure 14, and the cover body 15 and at least part of the inner wall of the accommodating recess 141 form the accommodating cavity 11 therebetween. The main body structure 14 and the cover body 15 are provided with a sealing structure 16 therebetween, which is used to seal the gap between the cover body 15 and the main body structure 14. In this way, the above-mentioned arrangement on the one hand makes it convenient for the worker to place the to-be-cooled member 1 in the accommodating cavity 11 by disassembling the cover body 15, thereby improving the convenience of the worker's operation; on the other hand, the sealing reliability of the accommodating cavity 11 is realized through the sealing structure 16, avoiding the leakage of the cooling medium, and further ensuring the heat dissipation effect of the to-be-cooled member 1.

[0070] In the embodiment, the sealing structure 16 is a sealing ring.

[0071] Specifically, the size of the sealing ring matches the size of the cover body 15 and the main body structure 14, so as to ensure the sealing of the gap between the cover body 15 and the main body structure 14, and ensure the sealing reliability of the accommodating cavity 11.

[0072] In the embodiment, the cover body 15 and the main body structure 14 are connected through a fastener 19.

[0073] Optionally, the fastener 19 is a bolt or a screw.

[0074] As shown in FIG. 1, Figure 2 ,Figure 4 and Figure 5 As shown, the main structure 14 also has a mounting port 142 and a through hole 143 communicating with the receiving cavity 11. The housing 10 also includes a cable outlet structure 17 and a transparent plate 18. The cable outlet structure 17 is located at the mounting port 142 and has a cable outlet hole 171 for the wires of the component to be cooled 1 to extend out of the receiving cavity 11. The transparent plate 18 is located at the through hole 143. In this way, the above arrangement allows the wires of the component to be cooled 1 to extend out of the receiving cavity 11 through the cable outlet hole 171, thereby realizing the connection between the component to be cooled 1 and the external load equipment. At the same time, the operator can observe the operating status of the component to be cooled 1 and the cooling medium through the transparent plate 18, ensuring that the operator can promptly detect malfunctions and carry out maintenance, further improving the operating stability of the component to be cooled 1.

[0075] Specifically, a sealing element is provided between the cable outlet structure 17 and the inner wall of the mounting port 142, and the sealing element is used to seal the gap between the cable outlet structure 17 and the mounting port 142.

[0076] Optionally, the seal is either a sealing ring or a sealing colloid.

[0077] like Figure 1 As shown, the circulation device 30 also includes a storage structure 33. The storage structure 33 has an inlet section 331, an outlet section 332, and a storage cavity. The storage cavity stores the cooling medium, and the inlet section 331 is connected to the outlet section 332 via the storage cavity. The storage structure 33 is positioned between two adjacent main sections 322. In the two main sections 322 adjacent to the storage structure 33, one main section 322 is connected to the other main section 322 sequentially via the inlet section 331, the storage cavity, and the outlet section 332. In this way, the cooling medium stored in the storage structure 33 can replenish the cooling medium in the receiving cavity 11. This ensures that the circulation device 30 has sufficient cooling medium for circulation while also preventing the cooling medium level in the receiving cavity 11 from falling below that of the heat-dissipating component 1, further improving the heat dissipation reliability of the heat dissipation system.

[0078] In this embodiment, the four main body segments 322 include a first main body segment 3221, a second main body segment 3222, a third main body segment 3223, and a fourth main body segment 3224.

[0079] It should be noted that the number of main body sections 322 is not limited to this and can be adjusted according to working conditions and usage requirements. Optionally, the number of main body sections 322 can be five, six, eight, ten, or more.

[0080] Specifically, one end of the first main body section 3221 is connected to the liquid outlet 13, and the other end of the first main body section 3221 is connected to one end of the pump body structure 31.

[0081] Specifically, one end of the second main section 3222 is in communication with the other end of the pump body structure 31, and the other end of the second main section 3222 is in communication with one end of the heat dissipation section 321.

[0082] Specifically, one end of the third main section 3223 is in communication with the other end of the heat dissipation section 321, and the other end of the third main section 3223 is in communication with the liquid inlet portion 331.

[0083] Specifically, one end of the fourth main section 3224 is in communication with the liquid outlet portion 332, and the other end of the fourth main section 3224 is in communication with the liquid inlet 12.

[0084] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0085] The box body of the heat dissipation system has a containing cavity, a liquid inlet and a liquid outlet. The containing cavity is used for containing the heat dissipation piece and the cooling medium. At least two adjusting pieces are arranged in the containing cavity, and the at least two adjusting pieces are oppositely arranged to form a flow-through channel. The flow-through channel contains at least part of the heat dissipation piece. The liquid inlet is in communication with the liquid outlet through the flow-through channel. At least one of the adjusting pieces is movably arranged to adjust the size of the flow-through channel when the adjusting piece moves towards or away from at least one other adjusting piece. The circulating device is arranged outside the box body, and two ends of the circulating device are in communication with the liquid inlet and the liquid outlet, respectively, to drive the cooling medium to circulate between the box body and the circulating device. In this way, during the operation of the heat dissipation piece, the cooling medium in direct contact with the heat dissipation piece can continuously and stably absorb the heat emitted by the heat dissipation piece to dissipate heat from the heat dissipation piece. At the same time, the circulating device drives the cooling medium to circulate, so that a cooling medium convection can be formed in the containing cavity. That is, the cooling medium with low thermal conductivity and high temperature can quickly flow away, while the cooling medium with high thermal conductivity and low temperature can quickly supplement, so as to ensure that the cooling medium has high heat dissipation efficiency, thereby solving the problem of poor heat dissipation reliability of the battery pack heat dissipation system in the prior art. At the same time, the adjusting piece can adjust the size of the flow-through channel to adjust the flow speed of the cooling medium in the flow-through channel (when the flow-through channel becomes smaller, the flow speed of the cooling medium increases, the convection effect increases, and the heat dissipation efficiency of the cooling medium increases; when the flow-through channel becomes larger, the flow speed of the cooling medium decreases, the convection effect decreases, and the heat dissipation efficiency of the cooling medium decreases). That is, the staff can adjust the size of the flow-through channel to ensure that the heat dissipation performance of the heat dissipation system can meet the heat dissipation needs of heat dissipation pieces of different specifications and sizes, thereby improving the universality of the heat dissipation system.

[0086] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0087] It should be noted that the terms "first", "second", and the like, herein do not necessarily have an either chronological or spatial relation. Rather, these terms can be used solely to distinguish a certain specific entity from another entity. It should be understood that the terms so used in the description are interchangeable under appropriate circumstances and embodiments of the application described herein are capable of operating in other sequences than described or illustrated herein.

[0088] The preferred embodiments of the present application have been described above with the specific embodiments. The present application is not limited to the above embodiments. It will be appreciated by those skilled in the art that any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall fall within the scope of the present application.

Claims

1. A heat dissipation system, characterized by, The heat dissipation system comprises: a box body (10) having a containing cavity (11) for containing a heat dissipation component (1) and a cooling medium, an inlet (12) and an outlet (13); at least two adjusting components (20) arranged in the containing cavity (11), the at least two adjusting components (20) being oppositely arranged to form a flow passage in which at least part of the heat dissipation component (1) is contained, the inlet (12) being communicated with the outlet (13) through the flow passage; at least one of the adjusting components (20) is movably arranged to adjust the size of the flow passage when the adjusting component (20) moves towards or away from at least one of the other adjusting components (20); a circulating device (30) arranged outside the box body (10), two ends of the circulating device (30) being respectively communicated with the inlet (12) and the outlet (13) to drive the cooling medium to circulate between the box body (10) and the circulating device (30).

2. The heat dissipation system of claim 1, wherein, The heat dissipation system further comprises a heat dissipation device (40) arranged on one side of the circulating device (30), the heat dissipation device (40) blowing air flow to the circulating device (30) to dissipate heat of the cooling medium in the circulating device (30).

3. The heat dissipation system of claim 2, wherein, The circulating device (30) comprises: a pump body structure (31); a communication structure (32) arranged between the pump body structure (31) and the box body (10), two ends of the pump body structure (31) being respectively communicated with the inlet (12) and the outlet (13) through the communication structure (32); or one end of the pump body structure (31) being communicated with one of the inlet (12) and the outlet (13), and the other end of the pump body structure (31) being communicated with the other of the inlet (12) and the outlet (13) through the communication structure (32); wherein the heat dissipation device (40) is arranged on one side of the communication structure (32) to blow air flow to the communication structure (32).

4. The heat dissipation system of claim 3, wherein, The communication structure (32) is tubular and comprises a plurality of main body segments (322) and a heat dissipation segment (321) arranged between two adjacent main body segments (322), at least one of the main body segments (322) being communicated with the inlet (12) and / or the outlet (13), the heat dissipation segment (321) comprising: a plurality of straight pipe segments (3211) and a bending segment (3212) arranged between two adjacent straight pipe segments (3211), the two adjacent straight pipe segments (3211) being communicated with each other through the bending segment (3212); or a plurality of bending segments (3212) communicated with each other; wherein the heat dissipation device (40) is arranged on one side of the heat dissipation segment (321) to blow air flow to the heat dissipation segment (321).

5. The heat dissipation system of claim 1, wherein, The liquid inlet (12) and the liquid outlet (13) are respectively arranged on two opposite sides of the box body (10), and the height H2 of the liquid outlet (13) relative to the bottom of the box body (10) satisfies H2 < H1.

6. The heat dissipation system of claim 1, wherein, The heat dissipation system further comprises: A limiting structure (50) is arranged in the accommodating cavity (11), and the limiting structure (50) is a plurality of limiting structures (50) arranged around the heat dissipation object (1) to form a limiting space for fixing the heat dissipation object (1).

7. The heat dissipation system of claim 6, wherein, The adjusting member (20) has a first matching part (21), the limiting structure (50) on both sides of the flow passage is a matching limiting structure (52), the matching limiting structure (52) has a second matching part (51), one of the first matching part (21) and the second matching part (51) is a protrusion, and the other of the first matching part (21) and the second matching part (51) is a recess, the protrusion extends into the recess, and the first matching part (21) is slidably arranged along the extension direction of the second matching part (51).

8. The heat dissipation system of claim 7, wherein, The first matching part (21) is a recess, and the second matching part (51) is a protrusion; The limiting structure (50) is a plate-shaped structure arranged on the bottom wall and / or the side wall of the accommodating cavity (11), the plate surface of the plate-shaped structure is arranged opposite to at least part of the side wall, and the protrusion of the matching limiting structure (52) is formed by at least part of the bottom wall away from the plate-shaped structure; The adjusting member (20) is plate-shaped and has a notch, and the notch is the recess; The adjusting member (20) is inserted on the matching limiting structure (52) through the notch and can slide along the extension direction of the matching limiting structure (52), and in at least two adjusting members (20) arranged opposite to each other, the plate surface of each adjusting member (20) surrounds the flow passage.

9. The heat dissipation system of claim 1, wherein, The box body (10) comprises: A main body structure (14) has an accommodating recess (141); A cover body (15) is arranged on the main body structure (14), and the cover body (15) and at least part of the inner wall of the accommodating recess (141) surround the accommodating cavity (11); The main body structure (14) and the cover body (15) are provided with a sealing structure (16) therebetween, and the sealing structure (16) is used for sealing the gap between the cover body (15) and the main body structure (14).

10. The heat dissipation system of claim 9, wherein, The main body structure (14) further has a mounting opening (142) and a through hole (143) in communication with the accommodating cavity (11), and the box body (10) further comprises: A wire outlet structure (17) is arranged at the mounting opening (142), and the wire outlet structure (17) has a wire outlet hole (171) for the lead wire of the heat dissipation object (1) to extend out of the accommodating cavity (11); The wire outlet structure (17) is arranged on the mounting opening (142), and the wire outlet structure (17) has a wire outlet hole (171) for the lead wire of the heat dissipation object (1) to extend out of the accommodating cavity (11); A transparent plate (18) is arranged at the through hole (143).

11. The heat dissipation system of claim 4, wherein, The circulating device (30) further comprises: A storage structure (33) has a liquid inlet portion (331), a liquid outlet portion (332), and a storage cavity for storing a cooling medium, the liquid inlet portion (331) communicates with the liquid outlet portion (332) through the storage cavity; The storage structure (33) is arranged between two adjacent body segments (322), in the two body segments (322) adjacent to the storage structure (33), one of the body segments (322) communicates with the other body segment (322) through the liquid inlet portion (331), the storage cavity, and the liquid outlet portion (332) in sequence.

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